Store the Etag property.

Author: dianambb

Templates/ObjC/Models/EntityType.h.tt

@@ -18,6 +18,7 @@ if (baseEntity == null)
 {
 #>
   @property (nonatomic, setter=setODataType:, getter=oDataType) NSString *oDataType;
+  @property (nonatomic, setter=setODataEtag:, getter=oDataEtag) NSString *oDataEtag; 
 <#
 }
 

Templates/ObjC/Models/EntityType.m.tt

@@ -57,6 +57,14 @@ if (entity.Base == null)
 {
     self.dictionary[@"@odata.type"] = val;
 }
+- (NSString*) oDataEtag
+{
+    return self.dictionary[@"@odata.etag"];
+}
+- (void) setODataEtag: (NSString*) val
+{
+    self.dictionary[@"@odata.etag"] = val;
+}
 <#
 }